This is my first post here so I apologize if I am asking a question that has been asked before. I am considering buying Sketchup 2018 to use with my late 2015 iMac Retina 5K. Although a review of the hardware and software requirements seems to indicate that it will be compatible I am wondering if anyone is successfully working with the Sketchup Pro 2018 on a 2015 iMac?

Thank you John. For the near-term I don’t expect to be creating models that large or complicated. I will be using it initially for designing a deck and a bathroom. Would you recommend going ahead and upgrading the OS to High Sierra or just trying to use the Sketchup Pro with the existing configuration?

I see no reason not to from the point of view of using SU, but check if any other programs that are important to you will still work under High Sierra.

And read the release notes to see if any of the new features could be useful for you, and be an incentive to upgrade.

danfromlittleton:

Also, do you think I will need more memory?

Not just to run SU for your size of model, no. I got extra for mine so as to be able to run several Virtual Machines for other purposes. Some other work I do needs a program that only runs under Windows 7 or 10, and I occasionally like to run Linux to understand it better, rather than because I need it.

I have the same laptop almost but with 16GB RAM. If it’s an option I would upgrade just to be safe, I often run out of memory when working on large projects and have to move onto my PC instead but my use case is probably a lot different that yours (Photoshop + Illustrator + Sketchup).